Prius L4-1.5L (1NZ-FXE) (Hybrid) (2003)
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Hydraulic Brake Booster: Testing and Inspection
ON-VEHICLE INSPECTION
CHECK HYDRAULIC BRAKE BOOSTER FLUID PRESSURE CHANGE
a. Inspect the battery positive voltage.
Battery positive voltage: 10 - 14 V
b. Turn the ignition switch OFF, depress the brake pedal more than 40 times.
c. Install LSPV gauge (SST) and brake pedal effort gauge, bleed air.
SST 09709-29018
d. When booster does not operate.
Depress the brake pedal and check fluid pressure.
At 250 N (26 kgf, 56 lbs.):
At 350 N (36 kgf, 79 lbs.):
e. When booster operates.
1. Turn the ignition switch ON and wait until the pump motor has stopped.
2. Depress the brake pedal and check fluid pressure.
At 50 N (5 kgf, 11 lbs.):
At 100 N (10 kgf, 22 lbs.):